Fig. 19. "A, B, C, D, E, F, G." Seven transverse sections illustrating the
structure of the supra-oesophageal ganglia. (Zeiss A, Hartnack's camera.)
_a._ Dorso-lateral horn of white matter. _b._ Ventro-lateral horn of white
matter. _c._ Postero-dorsal lobe of white matter. _d._ Ventral protuberance
of brain. _e._ Central lobe of white matter. _o.p._ Optic ganglion.
"A. Section through anterior portions of ganglia close to the origin of the
antennary nerve. B. Section a little in front of the point where the two
ganglia unite. C. Section close to anterior junction of two ganglia. D.
Section through origin of optic nerve on the right side. E. Section shewing
origin of the optic nerve on the left side. F. Section through the
dorso-median lobe of white matter. G. Section near the termination of the
dorsal tongue of ganglion cells."